tmux  3.2a
About: tmux is a terminal multiplexer that lets you switch easily between several programs in one terminal.
  Fossies Dox: tmux-3.2a.tar.gz  ("unofficial" and yet experimental doxygen-generated source code documentation)  

osdep-dragonfly.c
Go to the documentation of this file.
1 /* $OpenBSD$ */
2 
3 /*
4  * Copyright (c) 2009 Nicholas Marriott <nicholas.marriott@gmail.com>
5  *
6  * Permission to use, copy, modify, and distribute this software for any
7  * purpose with or without fee is hereby granted, provided that the above
8  * copyright notice and this permission notice appear in all copies.
9  *
10  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14  * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
15  * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
16  * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17  */
18 
19 #include <sys/param.h>
20 #include <sys/stat.h>
21 #include <sys/sysctl.h>
22 #include <sys/user.h>
23 
24 #include <err.h>
25 #include <errno.h>
26 #include <stdint.h>
27 #include <stdlib.h>
28 #include <string.h>
29 #include <unistd.h>
30 
31 struct kinfo_proc *cmp_procs(struct kinfo_proc *, struct kinfo_proc *);
32 char *osdep_get_name(int, char *);
33 char *osdep_get_cwd(int);
34 struct event_base *osdep_event_init(void);
35 
36 #ifndef nitems
37 #define nitems(_a) (sizeof((_a)) / sizeof((_a)[0]))
38 #endif
39 
40 #define is_runnable(p) \
41  ((p)->kp_stat == SACTIVE || (p)->kp_stat == SIDL)
42 #define is_stopped(p) \
43  ((p)->kp_stat == SSTOP || (p)->kp_stat == SZOMB)
44 
45 struct kinfo_proc *
46 cmp_procs(struct kinfo_proc *p1, struct kinfo_proc *p2)
47 {
48  if (is_runnable(p1) && !is_runnable(p2))
49  return (p1);
50  if (!is_runnable(p1) && is_runnable(p2))
51  return (p2);
52 
53  if (is_stopped(p1) && !is_stopped(p2))
54  return (p1);
55  if (!is_stopped(p1) && is_stopped(p2))
56  return (p2);
57 
58  if (strcmp(p1->kp_comm, p2->kp_comm) < 0)
59  return (p1);
60  if (strcmp(p1->kp_comm, p2->kp_comm) > 0)
61  return (p2);
62 
63  if (p1->kp_pid > p2->kp_pid)
64  return (p1);
65  return (p2);
66 }
67 
68 char *
69 osdep_get_name(int fd, char *tty)
70 {
71  int mib[4] = { CTL_KERN, KERN_PROC, KERN_PROC_PGRP, 0 };
72  struct stat sb;
73  size_t len;
74  struct kinfo_proc *buf, *newbuf, *bestp;
75  u_int i;
76  char *name;
77 
78  buf = NULL;
79 
80  if (stat(tty, &sb) == -1)
81  return (NULL);
82  if ((mib[3] = tcgetpgrp(fd)) == -1)
83  return (NULL);
84 
85 retry:
86  if (sysctl(mib, nitems(mib), NULL, &len, NULL, 0) == -1)
87  return (NULL);
88  len = (len * 5) / 4;
89 
90  if ((newbuf = realloc(buf, len)) == NULL)
91  goto error;
92  buf = newbuf;
93 
94  if (sysctl(mib, nitems(mib), buf, &len, NULL, 0) == -1) {
95  if (errno == ENOMEM)
96  goto retry;
97  goto error;
98  }
99 
100  bestp = NULL;
101  for (i = 0; i < len / sizeof (struct kinfo_proc); i++) {
102  if (buf[i].kp_tdev != sb.st_rdev)
103  continue;
104  if (bestp == NULL)
105  bestp = &buf[i];
106  else
107  bestp = cmp_procs(&buf[i], bestp);
108  }
109 
110  name = NULL;
111  if (bestp != NULL)
112  name = strdup(bestp->kp_comm);
113 
114  free(buf);
115  return (name);
116 
117 error:
118  free(buf);
119  return (NULL);
120 }
121 
122 char *
124 {
125  return (NULL);
126 }
127 
128 struct event_base *
130 {
131  return (event_init());
132 }
const char * name
Definition: layout-set.c:38
#define is_stopped(p)
char * osdep_get_cwd(int)
char * osdep_get_name(int, char *)
struct kinfo_proc * cmp_procs(struct kinfo_proc *, struct kinfo_proc *)
#define is_runnable(p)
#define nitems(_a)
struct event_base * osdep_event_init(void)
Definition: tmux.h:1304